OK, here is a custom transformer doing a "locate features along line" with FME 2006GB.
This one only works for geodatabases, but it can easily be adapted to work with shapes (basically, you just have to split the shape_mesures field instead of the geodb_measures.... samething for the AttributeExposer and Attributesetter). Another point that is important to notice is that it only projects your points to verticies and not to edges! (I already mentioned that, but it is important to stress) Mark, you can add it to FMEpedia, if you want. I cannot add attachments to FMEpedia. Greetings, Jeff PS: Remark to safe: I tried it in FME 2007beta, and the chopper did not keep the measures for the verticies ... Is this because the chopper does not support Rich Geometry yet or what is the reason? On 3/3/07, Jeff Konnen <[EMAIL PROTECTED]> wrote:
Hi, I'll try to make you an example for FME Workbench ... but let's get back to Python. All Arctoolbox-Functions are accessible through Python. A simple Python script like this: # Import system modules import sys, string, os, win32com.client # Create the Geoprocessor object gp = win32com.client.Dispatch("esriGeoprocessing.GpDispatch.1") gp.setProduct("ArcView") # Load required toolboxes... gp.AddToolbox("C:/Program Files/ArcGIS/ArcToolbox/Toolboxes/Linear Referencing Tools.tbx") gp.AddToolbox("C:/Program Files/ArcGIS/ArcToolbox/Toolboxes/Data Management Tools.tbx") events_dbf = "C:\\temp\\events.dbf" try: # Process: Make XY Event Layer... if gp.exists(events_dbf): gp.Delete_Management(events_dbf) # Process: Locate Features Along Routes... gp.LocateFeaturesAlongRoutes_lr(yourPointLayer, yourRouteLayer, routeID, tolerance, events_dbf, Output_Event_Table_Properties, "FIRST", "DISTANCE", "ZERO", "FIELDS") allows you to call that ArcToolbox tool through Python. Have a look into "Writing Geoprocessing Scripts" http://support.esri.com/index.cfm?fa=knowledgebase.documentation.viewDoc&PID=43&MetaID=1003 You can also generate such a script by clicking "Export" in the Modelbuilder window! but enough of ESRI Pyhton Scripting on the FME list. I'll shut up:) I'll try to set up an example workspace and i'll put it on fmepedia ... Greetings, Jeff On 3/3/07, grant.huntington <[EMAIL PROTECTED]> wrote: > > Hi Jeff, thanks for the help! Unfortunately...I still can't get it. > * > Expose the "geodb_mesures" field of your destination feature type. > * > Done, as well as for the source polyline (although in this case they are > shape_measures) > > *Convert your line to points (Chopper)... > > *Sounds good, but the measures don't get carried over like we expect. > Source dataset to Chopper to AttributeSetter to Visualizer (or Destination > dataset) and the measure field is empty. I tried Char and Num datatypes. > Maybe I'm doing something else wrong? > * > ...then snap your points to be located to the nearest of this points > (Neighbourfinder).... > **Attention: If you use an AchoredSnapper, it will always snap to a > vertex and not to the edge! * > *The "Locating Features Along Route" - function in ArcView also snaps to > the edge!* > > I used the AnchoredSnapper because it snapped to the closest point.... > I found that (please correct me if I'm wrong) the Neighborfinder grabbed the > attributes of all the candidate features within the tolerance and put them > in a list which I assume then needs to be sorted by distance and indexed but > I really have no idea...that would be complex than I wanted :) > > *You could write a batch script that calls your FME file throughthe > command line and afterwards a Python Script calling the "LocateFeatures > along line" from ArcView...* > > Also sounds good but it seems that the ArcView working "Locate Features > Along Route" is in VBA?? I fully expected to find a script in the > <Install>\Arctoolbox\Scripts location. > > *If you have FME ESRI Edition, you could extend the FME Extension for > ArcGIS so that you could integrate your FME Workbench logic into a > Geoprocessing model. > > *I am going to look into that - I didn't even know it existed. Well > kind of, but well...did I?* > * > *Handling measures in FME 2006 GB is not easy. * > *In FME 2007 this should get easier* > > Aha...Cheers to that - should be a great release > > Thanks again, > > Grant Huntington >> >
LocateFeatureAlongLine.fmx
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